1
|
Su Q, Liu Q, Wang P, Ding J, Wang J, Huang Y. CuO x/Cu nanorod skeleton supported Ru-doped CoO/NC nanocomposites for overall water splitting. J Colloid Interface Sci 2024; 661:175-184. [PMID: 38295699 DOI: 10.1016/j.jcis.2024.01.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/04/2024] [Accepted: 01/26/2024] [Indexed: 02/27/2024]
Abstract
High overpotential and low stability are major challenges for hydrogen evolution reaction (HER)/oxygen evolution reaction (OER). Tuning the electronic structure of catalysts is regarded as a core strategy to enhance catalytic activity. Herein, we report CuOx/Cu nanorod skeleton supported Ru doped cobalt oxide/nitrogen-doped carbon nanocomposites (Ru-CoO/NC/CuOx/Cu, denoted as RCUF) as bifunctional catalysis. The one-dimensional/three-dimensional (1D/3D) nanostructure and defect-rich amorphous/crystalline phases of RCUF facilitates active site exposure and electron transport. Experimental characterization and density functional theory (DFT) calculation results indicate that Ru doping can optimize the electronic structure, which accelerates the water dissociation process and reduces the Gibbs free energy of the reaction intermediates. As expected, the optimal RCUF-900 exhibits low overpotential (25/205 mV at 10 mA cm-2) and high stability (100/100 h) for HER/OER. RCUF-900 has low voltage (1.54 V at 10 mA cm-2) and high stability (100 h) for overall water splitting. This work provides new insights into the design of advanced catalysts for overall water splitting.
Collapse
Affiliation(s)
- Qiaohong Su
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China
| | - Qingcui Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China
| | - Pengyue Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China
| | - Juan Ding
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China
| | - Jiulin Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China
| | - Yudai Huang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, P. R. China.
| |
Collapse
|
2
|
Peng JL, Luo YL, Li JX, Huang JL, Xiao B, Xiao CF, Xiao K, Liu ZQ. Revealing the Effect of the [CoO] 6 Microstructure in Pseudocapacitance by Controlled Delithium of LiCoO 2. Nano Lett 2024; 24:1687-1694. [PMID: 38253561 DOI: 10.1021/acs.nanolett.3c04434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Revealing the in-depth structure-property relationship and designing specific capacity electrodes are particularly important for supercapacitors. Despite many efforts made to tune the composition and electronic structure of cobalt oxide for pseudocapacitance, insight into the [CoO]6 octahedron from the microstructure is still insufficient. Herein, we present a tunable [CoO]6 octahedron microstructure in LiCoO2 by a chemical delithiation process. The c-strained strain of the [CoO]6 octahedron is induced to form higher valence Co ions, and the (003) crystalline layer spacing increases to allow more rapid participation of OH- in the redox reaction. Interestingly, the specific capacity of L0.75CO2 is nearly four times higher than that of LiCoO2 at 10 mA g-1. The enhanced activity originated from the asymmetric strain [CoO]6 octahedra, resulting in enhanced electronic conductivity and Co-O hybridization for accelerated redox kinetics. This finding provides new insights into the modification strategy for pseudocapacitive transition metal oxides.
Collapse
Affiliation(s)
- Jia-Liang Peng
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yin-Lin Luo
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jian-Xi Li
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jia-Le Huang
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Bohao Xiao
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Can-Fei Xiao
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Kang Xiao
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Zhao-Qing Liu
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| |
Collapse
|
3
|
Fan Z, Sun Q, Yang H, Zhu W, Liao F, Shao Q, Zhang T, Huang H, Cheng T, Liu Y, Shao M, Shao M, Kang Z. Layered Quasi-Nevskite Metastable-Phase Cobalt Oxide Accelerates Alkaline Oxygen Evolution Reaction Kinetics. ACS Nano 2024. [PMID: 38286031 DOI: 10.1021/acsnano.3c11199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Clarifying the structure-reactivity relationship of non-noble-metal electrocatalysts is one of the decisive factors for the practical application of water electrolysis. In this field, the anodic oxygen evolution reaction (OER) with a sluggish kinetic process has become a huge challenge for large-scale production of high-purity hydrogen. Here we synthesize a layered quasi-nevskite metastable-phase cobalt oxide (LQNMP-Co2O3) nanosheet via a simple molten alkali synthesis strategy. The unit-cell parameters of LQNMP-Co2O3 are determined to be a = b = 2.81 Å and c = 6.89 Å with a space group of P3̅m1 (No. 164). The electrochemical results show that the LQNMP-Co2O3 electrocatalyst enables delivering an ultralow overpotential of 266 mV at a current density of 10 mA cmgeo-2 with excellent durability. The operando XANES and EXAFS analyses clearly reveal the origin of the OER activity and the electrochemical stability of the LQNMP-Co2O3 electrocatalyst. Density functional theory (DFT) simulations show that the energy barrier of the rate-determining step (RDS) (from *O to *OOH) is significantly reduced on the LQNMP-Co2O3 electrocatalyst by comparing with simulated monolayered CoO2 (M-CoO2).
Collapse
Affiliation(s)
- Zhenglong Fan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong, People's Republic of China
- Energy Institute, The Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong, People's Republic of China
| | - Qintao Sun
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Hao Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Wenxiang Zhu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Fan Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Qi Shao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Tianyang Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Hui Huang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Tao Cheng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Yang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Mingwang Shao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Minhua Shao
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong, People's Republic of China
- Energy Institute, The Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong, People's Republic of China
| | - Zhenhui Kang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
- Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa 999078, Macao, People's Republic of China
| |
Collapse
|
4
|
Saha P, Shaheen Shah S, Ali M, Nasiruzzaman Shaikh M, Aziz MA, Saleh Ahammad AJ. Cobalt Oxide-Based Electrocatalysts with Bifunctionality for High-Performing Rechargeable Zinc-Air Batteries. CHEM REC 2024; 24:e202300216. [PMID: 37651034 DOI: 10.1002/tcr.202300216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/16/2023] [Indexed: 09/01/2023]
Abstract
In recent years, the rapid growth in renewable energy applications has created a significant demand for efficient energy storage solutions on a large scale. Among the various options, rechargeable zinc-air batteries (ZABs) have emerged as an appealing choice in green energy storage technology due to their higher energy density, sustainability, and cost-effectiveness. Regarding this fact, a spotlight is shaded on air electrode for constructing high-performance ZABs. Cobalt oxide-based electrocatalysts on the air electrode have gained significant attention due to their extraordinary features. Particularly, exploration and integration of bifunctional behavior for energy storage has remarkably promoted both ORR and OER to facilitate the overall performance of the battery. The plot of this review is forwarded towards in-depth analysis of the latest advancements in electrocatalysts that are based on cobalt oxide and possess bifunctional properties along with an introduction of the fundamental aspects of ZABs, Additionally, the topic entails an examination of the morphological variations and mechanistic details mentioning about the synthesis processes. Finally, a direction is provided for future research endeavors through addressing the challenges and prospects in the advancement of next-generation bifunctional electrocatalysts to empower high-performing ZABs with bifunctional cobalt oxide.
Collapse
Affiliation(s)
- Protity Saha
- Department of Chemistry, Jagannath University, Dhaka, 1100, Bangladesh
- present address: Department of Environmental Science, Bangladesh University of Professionals (BUP), Dhaka, 1216, Bnagladesh
| | - Syed Shaheen Shah
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan
| | - Muhammad Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - M Nasiruzzaman Shaikh
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - Md Abdul Aziz
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - A J Saleh Ahammad
- Department of Chemistry, Jagannath University, Dhaka, 1100, Bangladesh
| |
Collapse
|
5
|
Khani M, Mousavi SE, Khalighi R, Abbasizadeh S, Pahlavanzadeh H, Ebrahim HA, Mozaffari A. Cobalt oxide-alumina catalysts for the methane-assisted selective catalytic reduction of SO 2 to sulfur. Heliyon 2023; 9:e21269. [PMID: 37954268 PMCID: PMC10632700 DOI: 10.1016/j.heliyon.2023.e21269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 10/11/2023] [Accepted: 10/18/2023] [Indexed: 11/14/2023] Open
Abstract
Preventing emission of pollutants in any kind, is a way to protect global environment. The objective of this study is to develop cobalt catalysts supported on alumina for the conversion of the toxic gas SO2 into elemental sulfur using methane. Although several useful catalysts have been proposed, there is still a need to synthesize a catalyst with a high sulfur yield that is also persistent during on-stream stability. To this end, four different catalysts were prepared using the wet impregnation technique, with Co3O4 content ranging from 0 to 15 wt%. Catalytic activity tests were carried out at atmospheric pressure and temperatures ranging from 550 to 800 °C. The Al2O3-Co (15 %) catalyst exhibited superior performance, with a sulfur yield of 98.1 % at 750 °C. The catalytic stability of the best catalyst was examined using a 20 h on-stream stability test under the optimized conditions including an SO2/CH4 molar feed ratio of 2 at 750 °C. The structural changes of the used catalyst after the stability test were investigated using XRD and TPO analyses. It was revealed that sulfidation of Co3O4 after a short while, results in decreasing the sulfur yield from 98.1 % to 89.8 %.
Collapse
Affiliation(s)
- Masoud Khani
- Faculty of Chemical Engineering, Petrochemical center of Excellency, Amirkabir University of Technology, Tehran, Iran
| | | | - Reza Khalighi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Saeed Abbasizadeh
- Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | | | - Habib Ale Ebrahim
- Faculty of Chemical Engineering, Petrochemical center of Excellency, Amirkabir University of Technology, Tehran, Iran
| | - Abbas Mozaffari
- Research and Development Unit, Sarcheshmeh Copper Complex, Kerman, Iran
| |
Collapse
|
6
|
Zhang SY, Li Z, Shen X, Shan J, Zhan J, Zhou H, Yi X, Lian HY, Liu Y. Formulating the Li sites of Li-CoO x composites for achieving high-efficiency oxidation removal of formaldehyde over the Ag/Li-CoO x catalyst under ambient conditions. Environ Res 2023; 235:116683. [PMID: 37459945 DOI: 10.1016/j.envres.2023.116683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
Oxide supported noble metals are extensively investigated for ambient formaldehyde oxidation, and the Ag-CoOx complex is one promising combination in terms of cost and activity. Further, we previously observed that cooperating Ag with Li + greatly boosted formaldehyde degradation on CoOx. Yet, there is still room for improvement in removal efficiency, mineralization capacity and resistance to severe conditions. These objectives could be realized via strategically formulating the Li+ sites of Li-CoOx composite in this sister study. Three samples with Li + ---Co3+-O2- connections (L-CO), spinel Li+ (LCO-S) and layered Li+ (LCO-L) were obtained at low (300 °C), moderate (500 °C) and high (700 °C) temperatures, respectively. The specific Li+ positions and componential interaction were demonstrated by Hyperspectral imaging (HSI), XRD, SEM, TEM, HAADF mapping, UV-vis DRS and XPS. Moreover, the effect of reactive oxygen exposure on catalytic oxidation of formaldehyde (330-350 mg/m3) was disclosed through CO-TPR and O2-TPD. Compared with the LCO-S and LCO-L, L-CO exhibited dominant formaldehyde degradation due to the larger content of surface oxygen. After Ag decoration, the Li+---Co3+-O2- connections uniquely caused a strong binding of Ag species with catalyst host, which boosted the amount of reactive oxygen and finally resulted in an even higher elimination of ∼73% (CO2 yield = ∼21%), 47% higher than that of the L-CO (CO2 yield = ∼6%). But in contrast, the Ag@LCO-S only achieved ∼53% removal (CO2 yield = ∼9%) and Ag modification was powerless in altering the inertness of LCO-L, demonstrating that the chemical environment of alkali metal is crucial to effectively tuning the catalyst activity. The advantage of Ag@L-CO in formaldehyde depollution was further reflected from its much better resistance to moisture and aromatic compound omnipresent in indoor air. For the first time, this study extended the understanding of the alkali-metal-promoted formaldehyde oxidation reaction to an in-depth level.
Collapse
Affiliation(s)
- Shi-Yu Zhang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China
| | - Zhonghong Li
- Yingkou Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yingkou, 115004, China
| | - Xudong Shen
- Yingkou Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yingkou, 115004, China
| | - Jiajia Shan
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China
| | - Jingjing Zhan
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China
| | - Hao Zhou
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China
| | - Xianliang Yi
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China
| | - Hao-Yu Lian
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yang Liu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| |
Collapse
|
7
|
Zulfiqar A, Zafar F, Yaqub B, Mahmoud HMA, Shah M, Widaa EMA, Nawaz H, Akhtar N, Nishan U. Cobalt oxide modified sulfur and phosphorus Co-doped g-C 3N 4 for screening of urinary human albumin. Mikrochim Acta 2023; 190:355. [PMID: 37594627 DOI: 10.1007/s00604-023-05936-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/27/2023] [Indexed: 08/19/2023]
Abstract
The fabrication of a heteroatom-doped nanocomposite based on cobalt oxide modified sulfur, phosphorus co-doped carbon nitride (Co3O4/SP-CN) with increased active sites is reported. The synthesized nanocomposite offers surprisingly high electrocatalytic oxidation efficacy toward human albumin (HA) despite its agglomeration. This improved efficacy of Co3O4/SP-CN nanocomposite could be attributed to its increased adsorption sites and surface defects, fast charge transportation capability, and conductivity. Additionally, morphological and compositional analysis of the fabricated Co3O4/SP-CN material has been performed through scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photon spectroscopy (XPS), and Raman spectroscopy. The fabricated electrode shows remarkable amperometric response against the HA with a limit of detection of 8.39 nM and linear range of 20-4000 nM at applied potential of 0.25 V versus Ag/AgCl in 0.1 M PBS (pH 8.2). The designed Co3O4/SP-CN electrode has been successfully applied to monitor HA in urine samples of diabetic patient with recovery percentage from 94.1 and 92.1% and with relative standard deviation (RSD) values of 5.8 and 7.8%. According to the best of our knowledge, this is the first report to use a Co3O4/SP-CN-based graphitic pencil (GP) electrode for monitoring of HA for early diagnosis of diabetic nephropathy.
Collapse
Affiliation(s)
- Anam Zulfiqar
- Department of Biochemistry, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan
| | - Farhan Zafar
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
| | - Bushra Yaqub
- Department of Biochemistry, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan
| | - HassabAlla M A Mahmoud
- Department of Physics, Faculty of Sciences and Arts, King Khalid University, Muhayil Asir, 63311, Saudi Arabia
| | - Mohibullah Shah
- Department of Biochemistry, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan.
| | - Einas M A Widaa
- Department of Physics, Turabah University College, Taif University, Box 11099, Taif, PO, 21944, Saudi Arabia
| | - Haq Nawaz
- Department of Biochemistry, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan
| | - Naeem Akhtar
- Institute of Chemical Sciences, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan.
| | - Umar Nishan
- Department of Chemistry, Kohat University of Science & Technology, Kohat, Pakistan
| |
Collapse
|
8
|
Alem AF, Worku AK, Ayele DW, Wubieneh TA, Teshager AA, Tadele mihret kndie, Admasu BT, Teshager MA, Asege AA, Ambaw MD, Zeleke MA, Shibesh AK, Yemata TA. Ag doped Co 3O 4 nanoparticles for high-performance supercapacitor application. Heliyon 2023; 9:e13286. [PMID: 36816229 PMCID: PMC9929304 DOI: 10.1016/j.heliyon.2023.e13286] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
Ag doped Co3O4 nanoparticles (NPs) were synthesized via a co-precipitation method changing the concentration of Ag. The crystal structure, morphology, surface area, functional group, optical band gap, and thermal property were investigated by XRD, SEM, BET, FTIR, UV-Vis, and TGA/DTA techniques. The XRD results showed the formation of single-cubic Co3O4 nanostructured materials with an average crystal size of 19.37 nm and 12.98 nm for pristine Co3O4 and 0.25 M Ag-doped Co3O4 NPs. Morphological studies showed that pristine Co3O4 and 0.25 M Ag-doped Co3O4 NPs having a porous structure with small spherical grains, porous structures with sponge-like structures, and loosely packed porous structures, respectively. The pristine and 0.25 M Ag-doped Co3O4 NPs showed BET surface areas of 53.06 m2/g, and 407.33 m2/g, respectively. The band gap energy of Co3O4 NPs were 2.96 eV, with additional sub-bandgap energy of 1.95 eV. Additionally, it was discovered that the band gap energies of 0.25 M Ag-doped Co3O4 NPs ranged from 2.2 to 2.75 eV, with an extra sub-band with energies ranging from 1.43 to 1.94 eV for all as-prepared samples. The Ag-doped Co3O4 as prepared samples show improved thermal properties due to the doping effect of silver. The CV test confirmed that the 0.25 M Ag-doped Co3O4 NPs exhibited the highest specific capacitance value of 992.7 F/g at 5 mV/s in a 0.1 M KOH electrolyte solution. The energy density and power density of 0.25 M Ag-doped Co3O4 NPs were 27.9 W h/kg and 3816.1 W/kg, respectively.
Collapse
Affiliation(s)
- Asab Fetene Alem
- Bahir Dar Energy Center, Bahir Dar Institute of Technology, Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Ababay Ketema Worku
- Bahir Dar Energy Center, Bahir Dar Institute of Technology, Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia,Corresponding author.
| | - Delele Worku Ayele
- Bahir Dar Energy Center, Bahir Dar Institute of Technology, Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia,Department of Chemistry, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia,Corresponding author. Bahir Dar Energy Center, Bahir Dar Institute of Technology, Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Tessera Alemneh Wubieneh
- School of Materials Science and Engineering, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Alebel abebaw Teshager
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology-Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Tadele mihret kndie
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology-Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Bimrew Tamrat Admasu
- Faculty of Mechanical Engineering, Bahir Dar Institute of Technology-Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Minbale Admas Teshager
- Department of Chemistry, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Addisu Alemayehu Asege
- School of Materials Science and Engineering, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Mehary Dagnew Ambaw
- Department of Industrial Chemistry, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Misganaw Alemu Zeleke
- School of Materials Science and Engineering, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Alemayehu Kifle Shibesh
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology-Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Temesgen Atnafu Yemata
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology-Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia,Corresponding author.
| |
Collapse
|
9
|
Yılmaz HÇ, Atalay FE, Kaya H, Erdemoğlu S. Sol-gel synthesis of TiO 2 on Co 3O 4-coated sporopollenin exine microcapsules (SECs) and photocatalytic performance of new semiconductor heterojunction material. Environ Sci Pollut Res Int 2022; 29:78620-78636. [PMID: 35696060 DOI: 10.1007/s11356-022-21357-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
In this study, a new approach was developed to prepare mesoporous hybrid TiO2/Co3O4 coated on Juglans sporopollenin exine microcapsules (SECs). TiO2 was synthesized on Co3O4-coated SECs used as substrate, by sol-gel method. The obtained semiconductor/semiconductor hetero-junction hybrid materials were characterized with X-ray diffractometry (XRD), UV-Vis absorption spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), particle size distribution, specific surface area, and zeta potential measurements. Photocatalytic performances of hybrid materials were tested for Reactive Black 5 dye under both UV and visible light. Equilibrium pH of the solution containing 10 mg/L Reactive Black 5 dye and 0.1% wt/v TiO2/Co3O4 was around 4.7. After irradiation in the solar box, more than 98% of the Reactive Black 5 was photocatalytically degraded within 60 min.
Collapse
Affiliation(s)
- Hatice Çağlar Yılmaz
- Department of Chemistry, Faculty of Science and Arts, İnönü University, 44280, Malatya, Turkey
| | - Funda Ersoy Atalay
- Department of Physics, Faculty of Science and Arts, İnönü University, 44280, Malatya, Turkey
| | - Harun Kaya
- Faculty of Engineering and Natural Sciences, Malatya Turgut Özal University, 44280, Malatya, Turkey
| | - Sema Erdemoğlu
- Department of Chemistry, Faculty of Science and Arts, İnönü University, 44280, Malatya, Turkey.
| |
Collapse
|
10
|
Kumar N, Sharma A, Rajput K, Kataria R, Mehta S. Cobalt-based co-ordination complex-derived nanostructure for efficient oxygen evolution reaction in acidic and alkaline medium. Heliyon 2022; 8:e10939. [PMID: 36247167 PMCID: PMC9562245 DOI: 10.1016/j.heliyon.2022.e10939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/13/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Electrochemical water splitting is one of the most important method for energy conversion and storage. For this, the design and development of a low-cost robust electrocatalyst are highly desirable. In this study, Cobalt-based electrocatalyst for Oxygen Evolution Reaction was synthesized by thermal treatment of Cobalt-dehydroacetic acid (Co-DHA). The as-synthesized Co nanostructures and Co-DHA crystals were characterized with powder X-ray diffraction, X-ray photoelectron spectroscopy thermo-gravimetric analysis, and field emission scanning electron microscopy. The electrochemical O2 evolution study shows the overpotential (at 10 mV/cm−2) correspond to 294 mV vs reference hydrogen electrode (RHE) for K-300 (Co3O4@300), whereas K-500 (Co3O4@500) shows 170 mV vs RHE values in 1 M KOH solution, respectively. Similar trends have been observed for electrochemical O2 evolution studies in 0.5 M H2SO4, where K-300 and K-500 shows the overpotential (at 10mV/cm−2) of 234 mV vs RHE, and 199 mV vs RHE, respectively. The outcomes show better catalytic efficiency of K-500 as compared to K-300. Simple one pot synthesis for precursor of Co3O4. Enhanced activity for oxygen evolution reaction. Efficient performance and stability in both acidic and alkaline medium.
Collapse
Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Panjab University, Sector-14, Chandigarh, India
| | - Aashima Sharma
- Department of Chemistry, Panjab University, Sector-14, Chandigarh, India
| | - Kritika Rajput
- Department of Physics, Panjab University, Sector-14, Chandigarh, India
| | - Ramesh Kataria
- Department of Chemistry, Panjab University, Sector-14, Chandigarh, India
| | - S.K. Mehta
- Department of Chemistry, Panjab University, Sector-14, Chandigarh, India,Corresponding author.
| |
Collapse
|
11
|
Zhang W, Descorme C, Valverde JL, Giroir-Fendler A. Yttrium-modified Co 3O 4 as efficient catalysts for toluene and propane combustion: Effect of yttrium content. J Hazard Mater 2022; 437:129316. [PMID: 35709621 DOI: 10.1016/j.jhazmat.2022.129316] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/25/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
A series of Y-modified cobalt oxides with various Y/(Co+Y) molar ratios (0.25 %, 0.5 %, 1 %, 3 % and 5 %) were prepared to study the effect of Y content on toluene and propane combustion. The characterization of the catalysts revealed that proper Y incorporation resulted in smaller crystallite sizes, larger specific surface areas, more oxygen vacancies and weaker Co-O bonds. As such, the Y-modified Co3O4 showed enhanced low-temperature reducibility, boosted oxygen mobility and better catalytic activity. However, excess Y (> 1 %) aggregates on the surface of Co3O4 and forms yttrium carbonate species, hindering the catalyst activity. A volcano-type relationship between the Y content and the catalytic activity was established. The optimal catalyst 1 % Y-Co (with Y/(Co+Y) molar ratio of 1 %) exhibited toluene oxidation rate of 24 nmol g-1 s-1 at 220 °C and propane oxidation rate of 69 nmol g-1 s-1 at 180 °C. Besides, 1 % Y-Co presented perfect cycling stability and long-term durability in propane oxidation. Regarding its low cost, high efficiency and good stability, 1 % Y-Co is a promising catalyst for the practical elimination of hydrocarbon emissions.
Collapse
Affiliation(s)
- Weidong Zhang
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 Avenue Albert Einstein, Villeurbanne F-69622, France
| | - Claude Descorme
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 Avenue Albert Einstein, Villeurbanne F-69622, France
| | - Jose Luis Valverde
- Department of Chemical Engineering, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, Avenida Camilo José Cela 12, Ciudad Real 13005, Spain
| | - Anne Giroir-Fendler
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 Avenue Albert Einstein, Villeurbanne F-69622, France.
| |
Collapse
|
12
|
Cai J, Quan W, Chen T, Ye D, Zhao H, Wu C. Overdoping strategy for preparing of two-phase oxide electrocatalyst to boost oxygen evolution reaction. Chem Asian J 2022; 17:e202200127. [PMID: 35344261 DOI: 10.1002/asia.202200127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/23/2022] [Indexed: 11/11/2022]
Abstract
The oxygen evolution reaction is of great significance to the production of hydrogen from high efficiency electrolytic water, hydrogen oxygen fuel cell and other energy conversion devices, but there are many challenges such as high cost, low efficiency and poor stability of catalysts. Among non-precious metal catalysts, oxide has its unique advantages. We used overdoping strategy to prepare two-phase oxide electrocatalyst SrCo 0.9 Fe 0.05 Mo 0.35 O x (SCFM 0.35 ) containing double perovskite and Co3O4 with excellent OER electrocatalytic activity and stability in alkaline solution. It required an overpotential of 361.7 mV to reach a 10 mA cm -2 current density and its performance only degrades by 3.48% after 1000 CV cycles accelerated stability tests, whose electrochemical performance is superior to that of single-phase double perovskites and undoped perovskites. SrCo 0.9 Fe 0.1 O 3 (SCF) ordinary perovskite is doped with slightly molybdenum (Mo), and then the ordinary perovskite turns into double perovskite because of the polyvalence characteristics of Mo. When Mo is overdoped, Co 3 O 4 phase was precipitated while Mo entered perovskite phase. This process causes lattice distortion and makes the surface electronic structure benign changes. Furthermore, the microscopic morphology of the material surface and the valence state of cobalt element are changed, thereby improving the microenvironment of the electrochemical process.
Collapse
Affiliation(s)
- Jian Cai
- Shanghai University, Department of Physics, College of Sciences & Institute for Sustainable Energy, shanghai, CHINA
| | - Wei Quan
- Shanghai University, State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering,, shanghai, CHINA
| | - Tianyi Chen
- Shanghai University, State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & College of Materials Science and Engineering,, shanghai, CHINA
| | - Daixin Ye
- Shanghai University, College of Sciences & Institute for Sustainable Energy, CHINA
| | - Hongbin Zhao
- Shanghai University, College of Sciences & Institute for Sustainable Energy, CHINA
| | - Chengzhang Wu
- Shanghai University, college of materials science and engineering, 149, Yanchang road, 200072, Shanghai, CHINA
| |
Collapse
|
13
|
Abstract
BACKGROUND This contribution of work describes a new strategy for manufacturing cobalt oxide nanoparticles and the results assured that, its efficiency was increased by adding Fe ions. The anticancer drugs usually have a limited medical value owing to their nonspecific cytotoxicity. It has been proven that by using the nanosystems to deliver tablets to tumour cells reduces the toxic quality. Because of these qualities, nanoparticles can be used as a stronger rival for potent cancer treatment. METHOD This study investigated the cytotoxicity of iron doped cobalt oxide nanoparticles through trypan blue exclusion method. RESULT The newly generated Fe doped Co3O4 nanoparticles had proved its biocompatibility from the report of reduced toxicity below 200 μg/mL on malignant cell lines. CONCLUSION The observed findings may encourage the development of anticancer drugs based on the inorganic particles, especially Fe doped Co3O4 nanoparticles, that could be serve as an excellent framework for the drug delivery and provide a new perspective for interpreting and targeting various therapeutic methodologies to tumours.
Collapse
Affiliation(s)
- C S Jincy
- Department of Physics, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, Tamilnadu, India.
| | - P Meena
- Associate Professor and Head, Department of Physics, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, Tamilnadu, India.
| |
Collapse
|
14
|
Chen TY, Kuo TR, Yougbaré S, Lin LY, Xiao CY. Novel direct growth of ZIF-67 derived Co 3O 4 and N-doped carbon composites on carbon cloth as supercapacitor electrodes. J Colloid Interface Sci 2022; 608:493-503. [PMID: 34626991 DOI: 10.1016/j.jcis.2021.09.198] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022]
Abstract
Zeolitic imidazolate framework-67 (ZIF67) derivatives are considered as promising active materials for energy storage owing to the possible formation of cobalt oxide and N-doped graphite. Cobalt oxide has multiple redox states for generating redox reactions for charge storage, while N-doped graphite can provide high electrical conductivity for charge transfer. In this study, it is the first time to synthesize binder-free electrodes composed of cobalt oxide and N-doped graphite derived from ZIF67 on carbon cloth (CC) for supercapacitor (SC). Successive oxidation and carbonization along with additional coverage of ZIF67 derivatives are applied to synthesize ZIF67 derivatives composed of cobalt oxide, N-doped graphite and cobalt oxide/N-doped graphite composites with different layer compositions. The highest specific capacitance (CF) of 90.0F/g at 20 mV/s is obtained for the oxidized ZIF67/carbonized ZIF67/carbon cloth (O67/C67/CC) electrode, due to the large surface area and high electrical conductivity benefitted from preferable morphology and growing sequence of Co3O4 and N-doped graphite. The symmetric SC composed of O67/C67/CC electrodes shows the maximum energy density of 2.53 Wh/kg at the power density of 50 W/kg. Cycling stability with CF retention of 70% and Coulombic efficiency of 65% after 6000 times repeatedly charge/discharge process is also obtained for this symmetric SC.
Collapse
Affiliation(s)
- Tzu-Yang Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Tsung-Rong Kuo
- International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan.
| | - Sibidou Yougbaré
- Institut de Recherche en Sciences de la Santé (IRSS-DRCO)/Nanoro, 03 B.P 7192, Ouagadougou 03, Burkina Faso
| | - Lu-Yin Lin
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan.
| | - Cheng-Yu Xiao
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| |
Collapse
|
15
|
Ji Z, Liu K, Chen L, Nie Y, Pasang D, Yu Q, Shen X, Xu K, Premlatha S. Hierarchical flower-like architecture of nickel phosphide anchored with nitrogen-doped carbon quantum dots and cobalt oxide for advanced hybrid supercapacitors. J Colloid Interface Sci 2021; 609:503-512. [PMID: 34809991 DOI: 10.1016/j.jcis.2021.11.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 01/20/2023]
Abstract
The exploitation of hybrid supercapacitors with excellent electrochemical properties is of great significance for energy storage systems. Herein, a three-dimensional hierarchical flower-like architecture of nickel phosphide (Ni2P) decorated with nitrogen-doped carbon quantum dots (N-CQDs) and cobalt oxide (Co3O4) is constructed by an effective two-step hydrothermal strategy followed by in situ phosphorization process. Introducing N-CQDs with superior electrochemical characteristics can not only induce the formation of N-CQDs deposited nickel hydroxide (Ni(OH)2) flower-like architecture but also significantly enhance the electrochemical features of Ni(OH)2 nanosheets. After combination with Co3O4 nanoparticles and phosphorization treatment, an advanced cathode of Ni2P/Co3O4/N-CQDs with enriched surface phosphate ions is obtained, which possesses an ultra-high capacity of 1044 C g-1 (2088 F g-1) at 1 A g-1 with a splendid rate capacity of 876 C g-1 (1752 F g-1) at 20 A g-1. Moreover, a device assembled by Ni2P/Co3O4/N-CQDs hierarchical flower-like architecture and p-phenylenediamine functionalized reduced graphene oxide (PPD/rGO) nanosheets depicts a commendable energy density of 53.5 Wh kg-1 at 772.9 W kg-1. This work provides a novel hierarchical multi-component electrode material with decent electrochemical capacities for hybrid supercapacitors, which has a broad prospect in energy storage devices.
Collapse
Affiliation(s)
- Zhenyuan Ji
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Kai Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Lizhi Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yunjin Nie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Drolma Pasang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qiang Yu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoping Shen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Keqiang Xu
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Subramanian Premlatha
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| |
Collapse
|
16
|
Sharma N, Reddy AS, Yun K. Electrochemical detection of hydrocortisone using green-synthesized cobalt oxide nanoparticles with nafion-modified glassy carbon electrode. Chemosphere 2021; 282:131029. [PMID: 34082310 DOI: 10.1016/j.chemosphere.2021.131029] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/03/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
Developing highly sensitive and selective sensors is important for the detection of steroid hormones. Electrochemical sensors are of great interest in this regard. Also utilization of bio-derived substances as an electrode material is environment friendly. In this study, we used green-synthesized cobalt oxide nanoparticles (CoO NPs) along with nafion (Naf) on a glassy carbon electrode to detect hydrocortisone (HC) by voltammetry. Electron microscopy, X-ray diffraction, Raman spectroscopy, ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy were used to characterize the CoO NPs prepared using Nigella sativa seeds extract. Cyclic voltammetry and differential pulse voltammetry was utilized for the detection of HC. Only one reduction peak at -0.5 V was observed in the presence of HC in 0.1 M sodium hydroxide, indicating an irreversible electrode process. The Naf-CoO NPs enhanced the active surface area of the glassy carbon electrode (GCE) that resulted in a good response for detecting HC with two linear ranges: 0.001-1 μM and 1-9 μM. In comparison to other published electrochemical sensors, the current sensor displayed a low limit of detection of 0.49 nM, as well as remarkable stability and reproducibility. The sensor exhibited credibility for the sensing of HC in pharmaceutical injections and blood serum samples with recovery percentages ranging from 97.7% to 102.5%. The electrochemical sensor has proved to be valuable for HC detection.
Collapse
Affiliation(s)
- Neha Sharma
- Department of Bionanotechnology, Gachon University, Gyeonggi-Do, 13120, Republic of Korea
| | - Ankireddy Seshadri Reddy
- Department of Chemical and Biological Engineering, Gachon University, Seongnam, Gyeonggi- Do, 13120, Republic of Korea; Department of Chemical Sciences, Dr. Buddolla's Institute of Life Sciences, Daminedu, Tirupati, Andhra Pradesh, 517503, India
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-Do, 13120, Republic of Korea.
| |
Collapse
|
17
|
Chen M, Zhao J, Wang Y, Huang X, Xu Y. CuCoOx/BiVO 4 multifunctional catalyst for organics degradation, water oxidation, and O 2 reduction under visible light. J Hazard Mater 2021; 419:126515. [PMID: 34323705 DOI: 10.1016/j.jhazmat.2021.126515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 06/02/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Monoclinic BiVO4 (BiV) is an excellent photoanode for water oxidation, but it is a poor photocatalyst for organic oxidation due to slow O2 reduction. Herein we report a 94-fold increased photocatalytic activity of BiV through a surface deposited CuCoOx. The model reaction was phenol degradation in aqueous solution under visible light. CuCoOx, CuOx, and CoOx were prepared in butanol, separately, while CuCo2O4 was prepared in aqueous solution. Solid characterization showed that CuCo2O4 was Cu0.92Co2.08O4, but CuCoOx was a mixture of Cu0.92Co2.08O4, CuOx, and CoOx. Notably, the rate of phenol oxidation on CuCoOx/BiV was not only larger than those on Pt/BiV, CuCo2O4/BiV, CuOx/BiV, and CoOx/BiV, but also larger than the sum of the rates obtained for the latter three. Photoluminescence study revealed that all co-catalysts improved the efficiency of charge separation of BiV, with the trend similar to that for phenol photo-oxidation. Electrochemical study with a BiV film electrode showed that among four co-catalysts, CuOx was the most active for O2 reduction, CoOx for water oxidation, and CuCo2O4 for water photo-oxidation. According to the measured band edge potentials for semiconductors, a possible charge transfer from BiV to co-catalyst is proposed, including the electron transfer for CuOx/BiV, the hole transfer for CoOx/BiV and CuCo2O4/BiV, and the sequential electron transfer for CuCoOx/BiV.
Collapse
Affiliation(s)
- Min Chen
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Jianjun Zhao
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yaru Wang
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xubo Huang
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yiming Xu
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| |
Collapse
|
18
|
Anuma S, Mishra P, Bhat BR. Polypyrrole functionalized Cobalt oxide Graphene (COPYGO) nanocomposite for the efficient removal of dyes and heavy metal pollutants from aqueous effluents. J Hazard Mater 2021; 416:125929. [PMID: 34492859 DOI: 10.1016/j.jhazmat.2021.125929] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 04/05/2021] [Accepted: 04/16/2021] [Indexed: 06/13/2023]
Abstract
A cobalt oxide graphene nanocomposite functionalized with polypyrrole (COPYGO) having a heterogenous porous structure was synthesized using hydrothermal method. Microscopic imaging of the COPYGO surface revealed its highly porous and ordered features. The adsorption performance of the COPYGO composite was systemically investigated for Methylene Blue (MB), Congo red (CR) dyes and toxic lead (Pb(II)) and Cadmium (Cd(II)) metals. These were selected as they are the common pollutants in industrial wastewater. The COPYGO was found to be thermally stable up to 195 oC with a specific surface area of 133 m2 g-1. Experimental data indicates that the COPYGO follows Langmuir and Temkin adsorption isotherm. The COPYGO was efficient in removing MB (92.8%), CR (92.2%), Pb(II) (93.08%) and Cd(II) (95.28%) pollutants at pH 7.2, 5.0, 5.5 and 6.1 respectively from the simulated effluents. The maximum adsorption capacity (Qmax) observed for MB 663.018 mg g-1, CR 659.056 mg g-1, Pb(II) 780.363 mg g-1 and Cd(II) 794.188 mg g-1 pollutants. The thermodynamic analysis of the COPYGO indicates that the adsorption is endothermic and spontaneous in nature. COPYGO showed very high efficient removal rate for the pollutants in simulated effluents which guaranteed its benefits and efficacy in industrial wastewater treatment.
Collapse
Affiliation(s)
- Saroja Anuma
- Catalysis and Material Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Mangalore, Karnataka 575025, India
| | - Praveen Mishra
- Catalysis and Material Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Mangalore, Karnataka 575025, India
| | - Badekai Ramachandra Bhat
- Catalysis and Material Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Mangalore, Karnataka 575025, India.
| |
Collapse
|
19
|
Çalışkan M, Baran T. Design of nanostructured palladium catalyst supported by chitosan/Co 3O 4 microspheres and investigation of its catalytic behavior against synthesis of benzonitriles. Int J Biol Macromol 2021; 182:722-9. [PMID: 33862074 DOI: 10.1016/j.ijbiomac.2021.04.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 12/17/2022]
Abstract
Designing of eco-friendly, low cost, and thermally stable stabilizing/supporting agents are always desired for production of catalyst systems which provide good catalytic performance in organic reactions. In this study, a novel, green, and efficient stabilizer containing chitosan/Co3O4 microspheres (CS/Co3O4) was developed. Palladium nanoparticles (Pd NPs) were then successfully immobilized on CS/Co3O4 as a heterogeneous nanocatalyst (Pd NPs/CS/Co3O4). Characterization of the designed materials were performed by FT-IR, TEM, FE-SEM, XRD, and EDS and it was determined that Pd NPs formed as approximately 20 nm. Catalytic behavior of Pd NPs/CS/Co3O4 was investigated in the production of different substituted benzonitriles via aryl halide cyanation. Catalytic studies indicate that electron-rich or poor aromatic halides were smoothly cyanated with good reaction yields by Pd NPs/CS/Co3O4 nanocatalyst by using K4[Fe(CN)6] as the cyanating agent. Moreover, it was found that Pd NPs/CS/Co3O4 nanocatalyst provided not only good reaction yields and but also good recovery/reusability for six times in the aryl halide cyanations. This paper displays that Pd NPs/CS/Co3O4 nanocatalyst has a great catalytic and recycling potential for aryl halide cyanations.
Collapse
|
20
|
Li S, Lin Y, Wang D, Zhang C, Wang Z, Li X. Polyhedral cobalt oxide supported Pt nanoparticles with enhanced performance for toluene catalytic oxidation. Chemosphere 2021; 263:127870. [PMID: 32835967 DOI: 10.1016/j.chemosphere.2020.127870] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Polyhedral CoOx was synthesized by calcination of Co-based metal-organic framework ZIF-67 and highly dispersed Pt nanoparticles were successfully loaded on CoOx. The catalytic results showed that Ptnano/CoOx had the best activity and stability. As compared with conventional Co3O4, polyhedral CoOx showed more excellent catalytic oxidation performance of toluene, which was related to enhanced oxygen mobility, defective structure and rich active oxygen species provided by Polyhedral CoOx. Moreover, Pt-CoOx metal-support interaction enhanced the dispersion of Pt species and showed more Pt0 ratio. It was reasonable that the gaseous O2 can be activated directly or moved into the catalyst's surface to form oxygen cycle.
Collapse
Affiliation(s)
- Shuangju Li
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yin Lin
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Da Wang
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Chuanhui Zhang
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao, 266071, China
| | - Zhong Wang
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Xuebing Li
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| |
Collapse
|
21
|
Tuan DD, Hung C, Da Oh W, Ghanbari F, Lin JY, Lin KYA. Porous hexagonal nanoplate cobalt oxide derived from a coordination polymer as an effective catalyst for activating Oxone in water. Chemosphere 2020; 261:127552. [PMID: 32731015 DOI: 10.1016/j.chemosphere.2020.127552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
As cobalt (Co) represents an effective transition metal for activating Oxone to degrade contaminants, tricobalt tetraoxide (Co3O4) is extensively employed as a heterogeneous phase of Co for Oxone activation. Since Co3O4 can be manipulated to exhibit various shapes, 2-dimensional plate-like morphology of Co3O4 can offer large contact surfaces. If the large plate-like surfaces can be even porous, forming porous nanoplate Co3O4 (PNC), such a PNC should be a promising catalyst for Oxone activation. Therefore, a facile but straightforward method is proposed to prepare such a PNC for activating Oxone to degrade pollutants. In particular, a cobaltic coordination polymer with a morphology of hexagonal nanoplate, which is synthesized through coordination between Co2+ and thiocyanuric acid (TCA), is adopted as a precursor. Through calcination, CoTCA could be transformed into hexagonal nanoplate-like Co3O4 with pores to become PNC. This PNC also shows different characteristics from the commercial Co3O4 nanoparticle (NP) in terms of surficial reactivity and textural properties. Thus, PNC exhibits a much higher catalytic activity than the commercial Co3O4 NP towards activation of Oxone to degrade a model contaminant, salicylic acid (SA). Specifically, SA was 100% degraded by PNC activating Oxone within 120 min, and the Ea of SA degradation by PNC-activated Oxone is 70.2 kJ/mol. PNC can also remain stable and effective for SA degradation even in the presence of other anions, and PNC could be reused over multiple cycles without significant loss of catalytic activity. These features validate that PNC is a promising and useful Co-based catalyst for Oxone activation.
Collapse
Affiliation(s)
- Duong Dinh Tuan
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
| | - Ching Hung
- Department of Civil Engineering, National Cheng Kung University, Tainan City, Taiwan
| | - Wen Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Farshid Ghanbari
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran.
| | - Jia-Yin Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan.
| |
Collapse
|
22
|
Lin XR, Kwon E, Hung C, Huang CW, Oh WD, Lin KYA. Co 3O 4 nanocube-decorated nitrogen-doped carbon foam as an enhanced 3-dimensional hierarchical catalyst for activating Oxone to degrade sulfosalicylic acid. J Colloid Interface Sci 2020; 584:749-759. [PMID: 33176929 DOI: 10.1016/j.jcis.2020.09.104] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/23/2020] [Accepted: 09/27/2020] [Indexed: 11/16/2022]
Abstract
As sulfosalicylic acid (SUA) is extensively used as a pharmaceutical product, discharge of SUA into the environment becomes an emerging environmental issue because of its low bio-degradability. Thus, SO4--based advanced oxidation processes have been proposed for degrading SUA because of many advantages of SO4-. As Oxone represents a dominant reagent for producing SO4-, and Co is the most capable metal for activating Oxone to generate SO4-, it is critical to develop an effective but easy-to-use Co-based catalysts for Oxone activation to degrade SUA. Herein, a 3D hierarchical catalyst is specially created by decorating Co3O4 nanocubes (NCs) on macroscale nitrogen-doped carbon form (NCF). This Co3O4-decorated NCF (CONCF) is free-standing, macroscale and even squeezable to exhibit interesting and versatile features. More importantly, CONCF consists of Co3O4 NCs evenly distributed on NCF without aggregation. The NCF not only serves as a support for Co3O4 NCs but also offers additional active sites to synergistically enhance catalytic activities towards Oxone activation. Therefore, CONCF exhibits a higher catalytic activity than the conventional Co3O4 nanoparticles for activating Oxone to fully eliminate SUA in 30 min with a rate constant of 0.142 min-1. CONCF exhibits a much lower Ea value of SUA degradation (35.2 kJ/mol) than reported values, and stable catalytic activities over multi-cyclic degradation of SUA. The mechanism of SUA degradation is also explored, and degradation intermediates of SUA degradation are identified to provide a possible pathway of SUA degradation. These features validate that CONCF is certainly a promising 3D hierarchical catalyst for enhanced Oxone activation to degrade SUA. The findings obtained here are also insightful to develop efficient heterogeneous Oxone-activating catalysts for eliminating emerging contaminants.
Collapse
Affiliation(s)
- Xin-Ru Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
| | - Eilhann Kwon
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gunja-dong, Gwangjin-gu, Seoul, Republic of Korea
| | - Ching Hung
- Department of Civil Engineering, National Cheng Kung University, Tainan City, Taiwan
| | - Chao-Wei Huang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Wen Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan.
| |
Collapse
|
23
|
Kanakkillam SS, Krishnan B, Avellaneda DA, Shaji S. A simple synthesis of ZnO:Co 2O 3 nanocomposites by pulsed laser irradiation in liquid. Mater Today Proc 2020; 33:1444-1452. [PMID: 32995305 PMCID: PMC7513878 DOI: 10.1016/j.matpr.2020.08.533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/20/2020] [Indexed: 12/23/2022]
Abstract
ZnO:Co2O3 nanocomposites by pulsed laser irradiation in water. Morphology was modified by laser irradiation and Co2O3 content. Elemental composition and their chemical states were confirmed by XPS. Nanocomposites showed higher visible light absorption compared to ZnO. Thin films of the ZnO:Co2O3 nanocomposites showed visible light photocatalysis.
Nanocomposite materials are emerging in popularity due to their enhanced performance over the constituent materials. In this work, we report the fabrication of zinc oxide: cobalt oxide nanocomposites in a simple, fast and room temperature synthesis with good productivity. The nanocomposites synthesized were characterized by SEM, XPS and UV–Visible spectroscopy to analyze their morphology, composition, chemical states, optical absorption, band gap etc. The nanocolloids of the composite were drop casted to form thin films for photocatalytic studies. In SEM analysis, the morphological transformation of the material is observed where it transformed from agglomerated spherical particles to petals shaped and then to partially spherical forms due to pulsed laser irradiation. XPS analysis showed a gradual change in oxygen high resolution spectra in the samples with respect to the concentration difference of cobalt oxide. The optical studies show an enhanced absorption in visible region for the nanocomposite and the energy band gap reduced to 2.4 eV. All the thin films of nanocomposite showed photocatalytic decay of methylene blue dye under visible light irradiation. The results of this study support the effective use of laser irradiation in liquid to obtain nanocomposites of metal oxides for photocatalytic applications.
Collapse
Affiliation(s)
- Sreed Sharma Kanakkillam
- Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León 66455, Mexico
| | - Bindu Krishnan
- Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León 66455, Mexico.,Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología (CIIDIT)- Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica (PIIT), Apodaca, Nuevo León 66600, Mexico
| | - David Avellaneda Avellaneda
- Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León 66455, Mexico
| | - Sadasivan Shaji
- Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León 66455, Mexico.,Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología (CIIDIT)- Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica (PIIT), Apodaca, Nuevo León 66600, Mexico
| |
Collapse
|
24
|
Li B, Rui Y, Xu J, Wang Y, Yang J, Zhang Q, Müller-Buschbaum P. Solution-processed p-type nanocrystalline CoO films for inverted mixed perovskite solar cells. J Colloid Interface Sci 2020; 573:78-86. [PMID: 32259694 DOI: 10.1016/j.jcis.2020.03.119] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/25/2020] [Accepted: 03/29/2020] [Indexed: 11/16/2022]
Abstract
Inorganic p-type materials show great potential as the hole transport layer in perovskite solar cells with the merits of low costs and enhanced chemical stability. As a p-type material, cobalt oxide (CoO) has received so far not that level of attention despite its high hole mobility. Herein, solution-processed p-type CoO nanocrystalline films are developed for inverted mixed perovskite solar cells. The ultrafine CoO nanocrystals are synthesized via an oil phase method, which are subsequently treated by a ligand exchange process using pyridine solvent to remove the long alkyl chains covering the nanocrystals. From this homogeneous colloidal solution CoO films are obtained, which exhibit a smooth and pin-hole free surface morphology with high transparency and good conductivity. The ultraviolet photoelectron spectrum also indicates that the energy levels of the CoO film match well with the mixed perovskite Cs0.05(FA0.83MA0.17)0.95(I0.83Br0.17)3. Inverted solar cells based on crystalline CoO films with ligand exchange show a reasonable energy conversion efficiency, whereas devices based on CoO films without ligand exchange suffer from a strong S-shape JV-characteristic. Thus, the crystalline CoO films are foreseen to pave a new way of inorganic hole transport materials in the fields of perovskite solar cells.
Collapse
Affiliation(s)
- Bin Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China
| | - Yichuan Rui
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China.
| | - Jingli Xu
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China
| | - Yuanqiang Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China
| | - Jingxia Yang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China
| | - Qinghong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München, Jams-Franck-Strasse 1, 85748 Garching, Germany; Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
| |
Collapse
|
25
|
Ji Z, Liu K, Li N, Zhang H, Dai W, Shen X, Zhu G, Kong L, Yuan A. Nitrogen-doped carbon dots anchored NiO/Co 3O 4 ultrathin nanosheets as advanced cathodes for hybrid supercapacitors. J Colloid Interface Sci 2020; 579:282-9. [PMID: 32593910 DOI: 10.1016/j.jcis.2020.06.070] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/10/2020] [Accepted: 06/16/2020] [Indexed: 11/22/2022]
Abstract
Herein, we demonstrate an advanced cathode of nitrogen-doped carbon dots (NCDs) anchored NiO/Co3O4 ultrathin nanosheets for hybrid supercapacitors by a facile hydrothermal-calcination route. Owing to the well defined thin-plate structure and ternary composition, the optimized NiO/Co3O4/NCDs nanosheets demonstrate a high specific capacity of 976.3 C g-1 (1775 F g-1) at 1 A g-1, and a splendid cycling stability of approximately 95.7% retention over 10,000 continuous cycles (15 A g-1). In addition, a hybrid supercapacitor is constructed by using NiO/Co3O4/NCDs nanosheets as cathode and reduced graphene oxide (RGO) supported NCDs composites as anode. The obtained NiO/Co3O4/NCDs//RGO/NCDs hybrid supercapacitor delivers a maximum energy density of 41.6 Wh kg-1, together with outstanding cycling stability (no decay after 10,000 cycles at 10 A g-1). Therefore, the ultrathin sheet-like structured NiO/Co3O4/NCDs cathode presents a great potential for supercapacitor application.
Collapse
|
26
|
Jarestan M, Khalatbari K, Pouraei A, Sadat Shandiz SA, Beigi S, Hedayati M, Majlesi A, Akbari F, Salehzadeh A. Preparation, characterization, and anticancer efficacy of novel cobalt oxide nanoparticles conjugated with thiosemicarbazide. 3 Biotech 2020; 10:230. [PMID: 32399380 DOI: 10.1007/s13205-020-02230-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 04/26/2020] [Indexed: 01/26/2023] Open
Abstract
Gastric cancer is one of the most common cancers in modern societies. Previous studies have shown that the use of nanoparticle complexes is effective in the treatment of cancer. The aim of this study was to investigate the cytotoxicity and anticancer properties of cobalt oxide (Co3O4) nanoparticles (NPs) functionalized by glutamic acid (Glu) and conjugated with thiosemicarbazide (TSC) on gastric cancer (AGS) cell line. First, the Co3O4@Glu/TSC nanoparticles were synthesized via co-condensation reaction. Fourier-transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) tests were performed for identifying the morphology, structure, size and functional groups of produced nanoparticles. MTT assay was also performed to evaluate cytotoxicity effect. Moreover, Annexin V/PI staining with flow cytometry analysis, caspase-3 activation assay, and Hoechst 33258 staining was carried out for evaluating apoptosis. The FTIR results showed that the components of Co3O4@Glu/TSC NPs complex were successfully fabricated. Crystallographic structure of Co3O4@Glu/TSC NPs was confirmed by XRD patterns. SEM results indicated that the size of the nanoparticles was in the range of 16-40 nm. An EDX spectrum was determined and data explained the existence of cobalt as the prominent element. MTT test results showed that AGS cell life was significantly decreased compared to the control group with increasing concentration of nanoparticles (dose-dependent) (P < 0.05), IC50 = 107.5 μg/mL. The results of flow cytometry assay and caspase-3 activity showed that fabricated Co3O4@Glu/TSC NPs induced apoptosis in the treated group. Moreover, Co3O4@Glu/TSC NPs treated AGS cells indicate an increase in the apoptotic characteristics including nuclear fragmentation. In the current work, the promising cytotoxicity and anti-cancer activities of Co3O4@Glu/TSC NPs complex toward gastric cancer (AGS) cell line were showed and it can be suggested for the drug delivery system.
Collapse
Affiliation(s)
- Mahsa Jarestan
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Kimia Khalatbari
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ayda Pouraei
- 2Department of Medical Sciences, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Sadaf Beigi
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mohammad Hedayati
- 4Department of Cell and Molecular Biology, University of Guilan, Rasht, Iran
| | - Amitis Majlesi
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Fatemeh Akbari
- Department of Biology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Ali Salehzadeh
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| |
Collapse
|
27
|
Topka P, Dvořáková M, Kšírová P, Perekrestov R, Čada M, Balabánová J, Koštejn M, Jirátová K, Kovanda F. Structured cobalt oxide catalysts for VOC abatement: the effect of preparation method. Environ Sci Pollut Res Int 2020; 27:7608-7617. [PMID: 31885057 DOI: 10.1007/s11356-019-06974-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
Magnetron sputtering was employed for the deposition of cobalt oxide thin films on stainless steel meshes. Catalysts prepared by sputtering in inert and oxidation atmosphere were compared with those obtained by electrochemical deposition and hydrothermal synthesis. Systematic characterization using X-ray diffraction, scanning electron microscopy, N2 physisorption, infrared spectroscopy, Raman spectroscopy, and temperature-programmed reduction by hydrogen allowed detailed monitoring of their physicochemical properties. Ethanol gas-phase oxidation was employed as a model reaction to reveal the catalytic performance of the catalysts. It was shown that the catalyst prepared by magnetron sputtering in oxidation atmosphere exhibited the best mechanical stability among all studied catalysts. Moreover, its catalytic activity was 18 times higher than that of pelletized commercial cobalt oxide.
Collapse
Affiliation(s)
- Pavel Topka
- Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135, 165 02, Prague, Czech Republic.
| | - Michaela Dvořáková
- Department of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Petra Kšírová
- Department of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Roman Perekrestov
- Institute of Physics of the CAS, Na Slovance 2, 182 21, Prague, Czech Republic
| | - Martin Čada
- Institute of Physics of the CAS, Na Slovance 2, 182 21, Prague, Czech Republic
| | - Jana Balabánová
- Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135, 165 02, Prague, Czech Republic
| | - Martin Koštejn
- Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135, 165 02, Prague, Czech Republic
| | - Květuše Jirátová
- Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135, 165 02, Prague, Czech Republic
| | - František Kovanda
- Department of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
| |
Collapse
|
28
|
Petala A, Noe A, Frontistis Z, Drivas C, Kennou S, Mantzavinos D, Kondarides DI. Synthesis and characterization of CoO x/BiVO 4 photocatalysts for the degradation of propyl paraben. J Hazard Mater 2019; 372:52-60. [PMID: 29567302 DOI: 10.1016/j.jhazmat.2018.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Cobalt-promoted bismuth vanadate photocatalysts of variable cobalt content (0-1.0 wt.%) were synthesized and characterized with various techniques including BET, XRD, DRS, XPS and TEM. BiVO4 exists in the monoclinic scheelite structure, while cobalt addition improves the absorbance in the visible region although it does not affect the band gap energy of BiVO4. Cobalt exists in the form of well-dispersed Co3O4 nanocrystallites, which are in intimate contact with the much larger BiVO4 nanoparticles. Photocatalytic activity was evaluated for the degradation of propyl paraben (PP) under simulated solar radiation. The activity of pristine BiVO4 is significantly improved adding small amounts of cobalt and is maximized for the catalyst containing 0.5 wt.% Co. PP degradation in ultrapure pure water increases with increasing photocatalyst loading (100 mg/L to 1.5 g/L), and decreasing PP concentration (1600-200 μg/L). Experiments in bottled water, as well as in pure water spiked with bicarbonate and chloride ions showed little effect of non-target inorganics on degradation. Conversely, degradation is severely impeded in secondary treated wastewater. The enhancement of the photocatalytic activity of the synthesized catalysts is attributed to efficient electron-hole separation, achieved at the p-n junction formed between the p-type Co3O4 and the n-type BiVO4 semiconductors.
Collapse
Affiliation(s)
- Athanasia Petala
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Antigoni Noe
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Charalampos Drivas
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Stella Kennou
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Dimitris I Kondarides
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece.
| |
Collapse
|
29
|
Ali AAM. Evaluation of some biological, biochemical, and hematological aspects in male albino rats after acute exposure to the nano-structured oxides of nickel and cobalt. Environ Sci Pollut Res Int 2019; 26:17407-17417. [PMID: 31020524 DOI: 10.1007/s11356-019-05093-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
Nanomaterial applications are a fast-developing field. In spite of their powerful advantages, many open questions regarding how these small-sized chemicals may influence the environment and human health. However, scarce reports are available on the potential hazards of combined nanoparticles, taken into consideration that nickel oxide (NiO) and cobalt (II, III) oxide (Co3O4) nanoparticles (NPs) are already used together in many applications. Hence, the present work was designed to study the probable changes in some biological, hematological, and serum biochemical variables throughout 2 weeks following an oral administration of 0.5 g and 1.0 g of NiO-NPs or/and Co3O4-NPs per kilogram body weight of rats. As compared with the controls, the exposure to NiO-NPs or Co3O4-NPs solely caused significant elevations in the relative weights of brain (RBW), kidney (RKW) and liver (RLW), water consumption (WC), red blood cells (RBCs) count, hemoglobin (Hb) content, packed cell volume (PCV), and serum levels of low-density lipoprotein cholesterol (LDL-C), glucose, creatinine, urea, and uric acid as well as serum activities of aspartate and alanine aminotransferases (ASAT and ALAT). In addition, remarkable declines in the total body weight (TBW), feed consumption (FC), white blood cells (WBCs) count, serum levels of total protein (TP), albumin, albumin/globulin ratio, total cholesterol (TC), triglycerides (TG), and high-density lipoprotein cholesterol (HDL-C) were caused by administration of NiO-NPs or Co3O4-NPs, separately. On contrary, the co-administration of NiO-NPs and Co3O4-NPs together caused less noticeable changes in most of studied variables as compared with those administered NiO-NPs or Co3O4-NPs, individually. In conclusion, the exposure to a combination of NiO-NPs and Co3O4-NPs suppressed the adverse effects of the individual NPs on the studied variables.
Collapse
Affiliation(s)
- Atef Abdel-Moneem Ali
- Department of Zoology, Faculty of Science, Cairo University, PO Box 12613, Giza, Egypt.
| |
Collapse
|
30
|
Wu M, Chen S, Soomro A, Ma S, Zhu M, Hua X, Xiang W. Investigation of synergistic effects and high performance of La-Co composite oxides for toluene catalytic oxidation at low temperature. Environ Sci Pollut Res Int 2019; 26:12123-12135. [PMID: 30827023 DOI: 10.1007/s11356-019-04672-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
Cobalt oxides have been considered as a kind of highly efficient catalyst for the oxidation of volatile organic compounds (VOCs). In this work, lanthanum-cobalt composite oxides were prepared by using the co-precipitation method, and toluene was used as the model compound. Diversified techniques including XRD, SEM, Raman spectra, XPS, H2-TPR, and N2 adsorption-desorption were applied to investigate the physicochemical properties of as-prepared materials. The composite catalysts showed different morphology including larger specific surface area and higher pore volume which would accelerate the adsorption of toluene and improve the amount of active sites on surface. Moreover, the addition of lanthanum could enhance the low-temperature reducibility, and it could be also beneficial to expose more Co3+ and adsorbed oxygen species on the surface of catalysts which could accelerate the oxidation of toluene and lower onset oxidation temperature. 0.05La-Co (with a molar ratio of lanthanum against cobalt is 0.05) showed the best catalytic performance. The complete conversion of toluene was achieved at 225 °C under the condition of toluene concentration = 1000 ppm and SV = 20,000 ml·g-1·h-1. Stability test over 0.05La-Co was conducted at 225 °C and it could maintain the 100% conversion of toluene for 720 min, indicating the excellent stability of as-prepared catalysts. Undoubtedly, lanthanum-cobalt composite oxide is a kind of promising material for the catalytic oxidation of VOCs.
Collapse
Affiliation(s)
- Mudi Wu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Shiyi Chen
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Ahsanullah Soomro
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Shiwei Ma
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Min Zhu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Xinguo Hua
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Wenguo Xiang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| |
Collapse
|
31
|
Munuera JM, Paredes JI, Villar-Rodil S, García-Dalí S, Castro-Muñiz A, Martínez-Alonso A, Tascón JMD. A direct route to activated two-dimensional cobalt oxide nanosheets for electrochemical energy storage, catalytic and environmental applications. J Colloid Interface Sci 2019; 539:263-276. [PMID: 30590234 DOI: 10.1016/j.jcis.2018.12.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/13/2018] [Accepted: 12/14/2018] [Indexed: 11/29/2022]
Abstract
Two-dimensional Co3O4 nanosheets have emerged as attractive materials for use in a number of relevant technological applications. To exhibit a competitive performance in such uses, however, their structure needs to be activated, which is frequently accomplished via post-synthesis reduction strategies that introduce oxygen vacancies and increase the number of active Co(II) sites. Here, we investigate a direct route for the synthesis of activated Co3O4 nanosheets that avoids reduction post-treatments, yielding materials with a high potential towards energy- and environment-related applications. The synthesis relied on an interim amorphous cobalt oxide material with nanosheet morphology, which upon calcination afforded Co3O4 nanosheets having Co(II) sites in quantities similar to those usually found for Co3O4 nanostructures activated by reduction post-treatments. When tested as electrodes for charge storage, the nanosheets demonstrated a competitive behavior in terms of both capacity and rate capability, e.g., a gravimetric capacity of ∼293 mAh g-1 at 1 A g-1 with 57% retention at 60 A g-1 was measured for nanosheets calcined at 350 °C. The materials were shown to be efficient catalysts for the reduction of nitroarenes (4-nitrophenol and 4-nitroaniline), outperforming other Co3O4 nanostructures, as well as effective adsorbents for the removal of organic dyes (methyl orange, methylene blue) from water.
Collapse
Affiliation(s)
- J M Munuera
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain.
| | - J I Paredes
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain.
| | - S Villar-Rodil
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - S García-Dalí
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - A Castro-Muñiz
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - A Martínez-Alonso
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - J M D Tascón
- Instituto Nacional del Carbón, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain
| |
Collapse
|
32
|
Qu F, Zhang S, Zhang B, Zhou X, Du S, Lin CT, Ruan S, Yang M. Hierarchical Co 3O 4@NiMoO 4 core-shell nanowires for chemiresistive sensing of xylene vapor. Mikrochim Acta 2019; 186:222. [PMID: 30847573 DOI: 10.1007/s00604-019-3335-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 02/23/2019] [Indexed: 12/15/2022]
Abstract
Hierarchical Co3O4@NiMoO4 core-shell nanowires (NWs) were synthesized utilizing a two-step hydrothermal method. The NWs show a high chemiresistive response (at a temperature of 255 °C) to xylene, with an Rgas/Rair ratio of 24.6 at 100 ppm xylene, while the response towards toluene, benzene, ethanol, and acetone, CO, H2S and NO2 is much weaker. In contrast, pure Co3O4 nanowires exhibit weak responses to all the vapors/gases and poor selectivity. The new NW sensor displays an almost linear response (1-100 ppm) to xylene and a lower detection limit of 424 ppb. The remarkable gas sensing characteristics are attributed to the synergistic catalytic effect and the formation of a heterostructure between Co3O4 and NiMoO4. Graphical abstract Schematic presentation of a xylene vapor chemiresistive sensor based on Co3O4@NiMoO4 core-shell nanowires. The Co3O4@NiMoO4 core-shell nanowires-based sensor exhibits a high response (24.6) to 100 ppm xylene at 255 °C and high response/recovery speed (13-15 and 25-29 s).
Collapse
Affiliation(s)
- Fengdong Qu
- College of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China.,Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Shendan Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Bingxue Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Xinxin Zhou
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Shiyu Du
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Cheng-Te Lin
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Shengping Ruan
- College of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China.
| | - Minghui Yang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
| |
Collapse
|
33
|
Niu J, Xie Y, Luo H, Wang Q, Zhang Y, Wang Y. Cobalt oxide loaded graphitic carbon nitride as adsorptive photocatalyst for tetracycline removal from aqueous solution. Chemosphere 2019; 218:169-178. [PMID: 30471497 DOI: 10.1016/j.chemosphere.2018.11.111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 06/09/2023]
Abstract
The treatment of antibiotic-containing wastewater is of great importance due to the potential threats of antibiotics to human and the ecosystem. We reported the preparation of cobalt oxide loaded graphitic carbon nitride (CoO/g-C3N4) by an impregnation-calcination method for tetracycline (TC) removal from aqueous solution. The developed CoO/g-C3N4 exhibited high adsorption capacity and fast adsorption kinetic for TC due to the complexation of TC with surface loaded CoO. In particular, 7%CoO/gC3N43 sample presented a maximum TC adsorption capacity of 391.4 mg g-1. It was found that Langmuir and pseudo-second order kinetic models fitted TC adsorption process well. Further photocatalytic studies showed that CoO loaded g-C3N4 was active for TC photodegradation, although the photocatalytic reaction rate constant was lower than that of native g-C3N4. CoO nanoparticles loading on g-C3N4 played the major role of adsorption sites rather than cocatalyst for photocatalysis. We believe that the developed CoO/g-C3N4 could be a potential adsorptive photocatalyst for antibiotic pollutants removal from wastewater.
Collapse
Affiliation(s)
- Jinye Niu
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yi Xie
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Haiqiong Luo
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Qian Wang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yabo Wang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
| |
Collapse
|
34
|
Kadam A, Saratale RG, Shinde S, Yang J, Hwang K, Mistry B, Saratale GD, Lone S, Kim DY, Sung JS, Ghodake G. Adsorptive remediation of cobalt oxide nanoparticles by magnetized α-cellulose fibers from waste paper biomass. Bioresour Technol 2019; 273:386-393. [PMID: 30458408 DOI: 10.1016/j.biortech.2018.11.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/06/2018] [Accepted: 11/11/2018] [Indexed: 06/09/2023]
Abstract
Remediation of engineered-nanomaterials is an up-coming major environmental concern. This study demonstrates adsorptive-remediation of cobalt oxide nanoparticles (CoO NPs) from the water. The α-cellulose-fibers were extracted from waste-paper biomass (WP-αCFs) and magnetized with Fe3O4 NPs (M-WP-αCFs). The XRD, FT-IR, and TGA were performed for detailed characterization of the newly developed bioadsorbent. The M-WP-αCFs was then applied for adsorptive remediation of CoO NPs. The adsorptive kinetics of CoO NPs adsorption onto the M-WP-αCFs reveals the pseudo-second-order model. The various adsorption isotherm studies revealed Langmuir is a best-fit isotherm. A prominently high adsorption capacity qm (1567 mg/g) corroborated extraordinary adsorptive potential of M-WP-αCFs. Furthermore, CoO NPs were adsorbed onto M-WP-αCFs were analyzed by the XPS, VSM, and TEM. Therefore, this study gave rise WP biomass extracted and rapidly-separable nano-biocomposite of 'M-WP-αCFs' with a high-capacity for CoO NPs remediation and can be further applied in remediation of several other engineered-nanomaterials.
Collapse
Affiliation(s)
- Avinash Kadam
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Rijuta Ganesh Saratale
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Surendra Shinde
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Jiwook Yang
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Kyojung Hwang
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Bhupendra Mistry
- Department of Food Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Saifullah Lone
- Cogno-Mechatronics Engineering, Department of Optics and Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan 46241, Republic of Korea
| | - Dae-Youg Kim
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Jung-Suk Sung
- Department of Life Sciences, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Gajanan Ghodake
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea.
| |
Collapse
|
35
|
Yuan R, Hu L, Yu P, Wang Z, Wang H, Fang J. Co 3O 4 nanocrystals/3D nitrogen-doped graphene aerogel: A synergistic hybrid for peroxymonosulfate activation toward the degradation of organic pollutants. Chemosphere 2018; 210:877-888. [PMID: 30208547 DOI: 10.1016/j.chemosphere.2018.07.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/24/2018] [Accepted: 07/13/2018] [Indexed: 06/08/2023]
Abstract
3D porous Co3O4/nitrogen-doped graphene aerogel (NGA) hybrid for heterogeneous activation of peroxymonosulfate (PMS) was prepared by feasible hydrothermal and freeze-drying methods. The morphology, crystal structure and chemical composition of the catalyst were investigated by scanning electron microscopy, X-ray diffractometer, X-ray photoelectron spectroscopy, Raman spectra and Fourier transform infrared spectroscopy. Co3O4/NGA at a high N doping level of 7.6% (in atomic percentage) exhibited excellent catalytic performance for acid orange 7 (AO7) degradation, with almost complete removal within 30 min. Moderate PMS content, higher temperature and lower solution pH conditions would facilitate the decomposition of AO7. The catalyst possesses excellent long-term stability and recycling performance with simple separation and post-treatment approaches. Kinetic model was developed to simulate the transformation of main active radical species and the AO7 oxidation profiles, considering effects of coexisting ions (Cl- and HCO3-). Based on results of electron spin resonance, typical quenching tests and kinetic calculation, sulfate radicals play dominate role in AO7 degradation. Co3O4 nanocrystals and the new active sites created by nitrogen doping into graphene honeycomb network should synergistically contribute to the high degradation efficiency. This work has expanded the possibility of recyclable catalysts design for heterogeneous activation of PMS, with a dual catalytically active center and desirable stability.
Collapse
Affiliation(s)
- Ruixia Yuan
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Lin Hu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Peng Yu
- Oil Refinery of Daqing Petrochemical Company, Daqing 163711, China
| | - Zhaohui Wang
- International Centre for Balanced Land Use (ICBLU), The University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Huaiyuan Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China.
| | - Jingyun Fang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, China
| |
Collapse
|
36
|
Nouri M, Esfahanizadeh N, Shahpar MG, Attar F, Sartipnia N, Akhtari K, Saboury AA, Falahati M. Cobalt oxide nanoparticles mediate tau denaturation and cytotoxicity against PC-12 cell line. Int J Biol Macromol 2018; 118:1763-1772. [PMID: 30017981 DOI: 10.1016/j.ijbiomac.2018.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/05/2018] [Accepted: 07/07/2018] [Indexed: 12/19/2022]
Abstract
It has not been well explored how NPs may induce some adverse effects on the biological systems. In this research, the interaction of cobalt oxide NPs (Co3O4 NPs) with tau protein and PC-12 cell line, as nervous system models, was investigated with several approaches including fluorescence spectroscopy, CD spectroscopy, docking study, MTT, LDH, AO/EB dual staining, and flow cytometry assays. Fluorescence investigation displayed that Co3O4 NPs spontaneously mediate the formation of a static complex with tau protein through hydrogen bonds and van der Waals forces. Docking study also revealed that Ser and Gln residues play important roles in the formation of hydrogen bonds between tau and Co3O4 NPs. Far UV-CD measurement determined that Co3O4 NPs changed the unfolded structure of tau protein toward a more folded conformation. Moreover, Co3O4 NPs demonstrated to stimulate the reduction of PC-12 cell viability through membrane leakage, fragmentation of DNA, apoptosis, and necrosis. In conclusion, Co3O4 NPs may trigger marked alterations on the tertiary and secondary structure of tau protein. Also, the dose of Co3O4 NPs is the crucial factor which induces their adverse effects on the cells. Because, all side effects of NPs are not well explored, additional detailed experiments are more needed.
Collapse
Affiliation(s)
- Mina Nouri
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Narges Esfahanizadeh
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Mahsa Ghofrani Shahpar
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Farnoosh Attar
- Department of Biology, Faculty of Food Industry & Agriculture, Standard Research Institute (SRI), Karaj, Iran
| | - Nasrin Sartipnia
- Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, P.O. Box 416, Sanandaj, Iran
| | - Ali Akbar Saboury
- Inistitite of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran.
| |
Collapse
|
37
|
Liu J, Wang Z, Jian P, Jian R. Highly selective oxidation of styrene to benzaldehyde over a tailor-made cobalt oxide encapsulated zeolite catalyst. J Colloid Interface Sci 2018; 517:144-154. [PMID: 29421674 DOI: 10.1016/j.jcis.2018.01.113] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/25/2017] [Accepted: 01/31/2018] [Indexed: 11/20/2022]
Abstract
A tailor-made catalyst with cobalt oxide particles encapsulated into ZSM-5 zeolites (Co3O4@HZSM-5) was prepared via a hydrothermal method with the conventional impregnated Co3O4/SiO2 catalyst as the precursor and Si source. Various characterization results show that the Co3O4@HZSM-5 catalyst has well-organized structure with Co3O4 particles compatibly encapsulated in the zeolite crystals. The Co3O4@HZSM-5 catalyst was employed as an efficient catalyst for the selective oxidation of styrene to benzaldehyde with hydrogen peroxide as a green and economic oxidant. The effect of various reaction conditions including reaction time, reaction temperature, different kinds of solvents, styrene/H2O2 molar ratio and catalyst dosage on the catalytic performance were systematically investigated. Under the optimized reaction condition, the yield of benzaldehyde can achieve 78.9% with 96.8% styrene conversion and 81.5% benzaldehyde selectivity. Such an excellent catalytic performance can be attributed to the synergistic effect between the confined reaction environment and the proper acidic property. In addition, the reaction mechanism with Co3O4@HZSM-5 as the catalyst for the selective oxidation of styrene to benzaldehyde was reasonably proposed.
Collapse
Affiliation(s)
- Jiangyong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Zihao Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Panming Jian
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Ruiqi Jian
- School of Medicine, Stanford University, Stanford, CA 94304, USA
| |
Collapse
|
38
|
Zhang X, Liu X, Zeng S, Fang J, Men C, Zhang X, Li Q. Reducing and Uniforming the Co 3 O 4 Particle Size by Sulfonated Graphenal Polymers for Electrochemical Applications. Nanoscale Res Lett 2017; 12:165. [PMID: 28269971 PMCID: PMC5336442 DOI: 10.1186/s11671-017-1953-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 02/26/2017] [Indexed: 06/06/2023]
Abstract
A novel two-dimensional (2D) nanomaterial, namely sulfonated graphenal polymer (SGP), is used to tune the hydrothermal growth of Co3O4 nanoparticles. SGP provides abundant nucleation sites to grow Co3O4 nanoparticles and effectively reduces the particle size and dimension. As a result, with considering the improved size uniformity of Co3O4 and the tight wrapping of SGP around Co3O4 as well, the Co3O4/SGP hybrid electrode exhibits a high specific electrochemical capacitance of 234.28 F/g at a current density of 0.2 A/g, 237% higher than that of the pure Co3O4 electrode. By using the hybrid as the anode of an all-solid-state asymmetric supercapacitor, the capacitance can be well maintained up to 93% after 5000 cycles even at 2 A/g.
Collapse
Affiliation(s)
- Xin Zhang
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai, 200444, China
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Xubo Liu
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Sha Zeng
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Jianhui Fang
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai, 200444, China
| | - Chuanling Men
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Xiaohua Zhang
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China.
| | - Qingwen Li
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| |
Collapse
|
39
|
Speer RM, The T, Xie H, Liou L, Adam RM, Wise JP. The Cytotoxicity and Genotoxicity of Particulate and Soluble Cobalt in Human Urothelial Cells. Biol Trace Elem Res 2017; 180:48-55. [PMID: 28324276 DOI: 10.1007/s12011-017-0989-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/02/2017] [Indexed: 11/25/2022]
Abstract
Cobalt use is increasing particularly due to its use as one of the primary metals in cobalt-chromium-molybdenum (CoCrMo) metal-on-metal prosthetics. CoCrMo is a high-strength, wear-resistant alloy with reduced risk for prosthetic loosening and device fracture. More than 500,000 people receive hip implants each year in the USA which puts them at potential risk for exposure to metal ions and particles released by the prosthetic implants. Data show cobalt ions released from prosthetics reach the bloodstream and accumulate in the bladder. As patients with failed hip implants show increased urinary and blood cobalt levels, no studies have considered the effects of cobalt on human urothelial cells. Accordingly, we investigated the cytotoxic and genotoxic effects of particulate and soluble cobalt in urothelial cells. Exposure to both particulate and soluble cobalt resulted in a concentration-dependent increase in cytotoxicity, genotoxicity, and intracellular cobalt ions. Based on intracellular cobalt ion levels, we found, when compared to particulate cobalt, soluble cobalt was more cytotoxic, but induced similar levels of genotoxicity. Interestingly, at similar intracellular cobalt ion concentrations, soluble cobalt induced cell cycle arrest indicated by a lack of metaphases not observed after particulate cobalt treatment. These data indicate that cobalt compounds are cytotoxic and genotoxic to human urothelial cells and solubility may play a key role in cobalt-induced toxicity.
Collapse
Affiliation(s)
- Rachel M Speer
- Wise Laboratory of Environmental and Genetic Toxicology, University of Louisville, 505 S. Hancock St, CTRB rm 522, Louisville, KY, 40292, USA
| | - Therry The
- Wise Laboratory of Environmental and Genetic Toxicology, University of Louisville, 505 S. Hancock St, CTRB rm 522, Louisville, KY, 40292, USA
- Maine General Health, Alfonso Center of Health, Histology and Cytology Laboratory, 35 Medical Center Parkway, Augusta, ME, 04330, USA
| | - Hong Xie
- Wise Laboratory of Environmental and Genetic Toxicology, University of Louisville, 505 S. Hancock St, CTRB rm 522, Louisville, KY, 40292, USA
- Toxikon Corp, 15 Wiggins Avenue, Bedford, MA, 01730, USA
| | - Louis Liou
- Cambridge Health Alliance Somerville Hospital, 230 Highland Avenue, 4th Floor South Building, Somerville, MA, 02143, USA
| | - Rosalyn M Adam
- Department of Urology, Enders Research Building, Rm 1061.1, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - John Pierce Wise
- Wise Laboratory of Environmental and Genetic Toxicology, University of Louisville, 505 S. Hancock St, CTRB rm 522, Louisville, KY, 40292, USA.
| |
Collapse
|
40
|
Al-Qirby LM, Radiman S, Siong CW, Ali AM. Sonochemical synthesis and characterization of Co 3O 4 nanocrystals in the presence of the ionic liquid [EMIM][BF 4]. Ultrason Sonochem 2017; 38:640-651. [PMID: 27553194 DOI: 10.1016/j.ultsonch.2016.08.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/31/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
For the first time, a sonochemical process has been used to synthesis cobalt oxide Co3O4 nanoflowers and nanorods morphology in the presence of the ionic liquid 1-Ethyl-3-methylimidazolium tetrafluoroborate [EMIM][BF4] as reaction media and morphology template. Different sonication time periods and different molar ratios of the ionic liquid (IL) were used to investigate their effects on the structural, optical, chemical and magnetic properties of the produced Co3O4 nanoparticles. During synthesis process brown powder contains cobalt hydroxide Co(OH)2 and cobalt oxyhydroxide (Cobalt hydroxide oxide) CoO(OH) was formed, after calcination in air for 4h at 400°C a black powder of Co3O4 nanoparticles was produced. The produced Co3O4 nanoparticles properties were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), transmission electron microscopy (TEM), FTIR spectroscopy, UV-vis spectroscopy, and Vibrating Sample Magnetometer (VSM). To explain the formation mechanism of Co3O4 NPs some investigations were carried on the brown powder before calcination.
Collapse
Affiliation(s)
- Lamya Mohammed Al-Qirby
- School of Applied Physics, Faculty of Science & Technology (FST), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia.
| | - Shahidan Radiman
- School of Applied Physics, Faculty of Science & Technology (FST), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
| | - Chiu Wee Siong
- Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ameen M Ali
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
| |
Collapse
|
41
|
Guo D, Chen F, Zhang W, Cao R. Phase-transfer synthesis of α-Co(OH) 2 and its conversion to CoO for efficient electrocatalytic water oxidation. Sci Bull (Beijing) 2017; 62:626-632. [PMID: 36659303 DOI: 10.1016/j.scib.2017.03.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 03/22/2017] [Accepted: 03/24/2017] [Indexed: 01/21/2023]
Abstract
Water splitting is an attractive way to produce recyclable hydrogen energy resource. The oxygen evolution reaction (OER) is the rate-determine step of water electrolysis. The exploring of low-cost, highly efficient and durable electrocatalysts for OER is thus extremely important. In this work, we developed a facile two-phase protocol to fabricate an α-Co(OH)2 using sodium oleate as the phase-transfer surfactant. The crystallinity and structure of the α-Co(OH)2 was regulated by heat treatments toward enhanced electrocatalytic OER activity. With the calcination of the as-prepared α-Co(OH)2 at 200°C, a networked and well-dispersed CoO nanoparticles were formed. The CoO sample afforded an OER current density of 10mAcm-2 under a low overpotential of 312mV in a 1molL-1 KOH aqueous solution. The high activity of the CoO material is believed to be associated with its ultra-small particle size and plentiful open spaces in the material, both of which can provide abundant surface catalytic sites.
Collapse
Affiliation(s)
- Dingyi Guo
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Fangfang Chen
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Wei Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Rui Cao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China; Department of Chemistry, Renmin University of China, Beijing 100872, China.
| |
Collapse
|
42
|
Tao L, Shengjun L, Bowen Z, Bei W, Dayong N, Zeng C, Ying Y, Ning W, Weifeng Z. Supercapacitor electrode with a homogeneously Co3O4-coated multiwalled carbon nanotube for a high capacitance. Nanoscale Res Lett 2015; 10:208. [PMID: 25995711 PMCID: PMC4437991 DOI: 10.1186/s11671-015-0915-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 04/26/2015] [Indexed: 05/27/2023]
Abstract
Cobalt oxide (Co3O4) was homogeneously coated on multiwalled carbon nanotube through a simple chemical deposition method and employed in supercapacitor electrodes. SEM image indicated the uniform distribution of Co3O4 nanoparticles on the surface of the multiwalled carbon nanotube. A maximum specific capacitance of 273 Fg(-1) was obtained at the charge-discharge current density of 0.5 Ag(-1). After 500 cycles of continuous charge-discharge process, about 88% of the initial capacity could be retained.
Collapse
Affiliation(s)
- Li Tao
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Li Shengjun
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Zhang Bowen
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Wang Bei
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Nie Dayong
- />Department of Basic Courses, Yellow River Conservancy Technical Institute, Kaifeng, 475001 China
| | - Chen Zeng
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Yan Ying
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Wan Ning
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Zhang Weifeng
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| |
Collapse
|
43
|
Abstract
The contemporary demand to generate fuels from solar energy has stimulated intense effort to develop water splitting catalysts that can be coupled to light-absorbing materials. Cobalt oxido catalyst (Co-OECs) films deposited from buffered Co(II) solutions have emerged as arguably the most studied class of heterogeneous oxygen evolution catalysts. The interest in these materials stems from their formation by self-assembly, their self-healing properties, and their promising catalytic activity under a variety of conditions. The structure and function of these catalysts are reviewed here together with studies of molecular Co-O cluster compounds, which have proven invaluable in elucidating the chemistry of the Co-OECs.
Collapse
Affiliation(s)
- D Kwabena Bediako
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, USA
| | - Andrew M Ullman
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, USA
| | - Daniel G Nocera
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, USA.
| |
Collapse
|
44
|
Jodłowski PJ, Jędrzejczyk RJ, Rogulska A, Wach A, Kuśtrowski P, Sitarz M, Łojewski T, Kołodziej A, Łojewska J. Spectroscopic characterization of Co3O4 catalyst doped with CeO2 and PdO for methane catalytic combustion. Spectrochim Acta A Mol Biomol Spectrosc 2014; 131:696-701. [PMID: 24913565 DOI: 10.1016/j.saa.2014.05.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 05/01/2014] [Accepted: 05/11/2014] [Indexed: 06/03/2023]
Abstract
The study deals with the XPS, Raman and EDX characterization of a series of structured catalysts composed of cobalt oxides promoted by palladium and cerium oxides. The aim of the work was to relate the information gathered from spectroscopic analyses with the ones from kinetic tests of methane combustion to establish the basic structure-activity relationships for the catalysts studied. The most active catalyst was the cobalt oxide doped with little amount of palladium and wins a confrontation with pure palladium oxide catalyst which is commercially used in converters for methane. The analyses Raman and XPS analyses showed that this catalyst is composed of a cobalt spinel and palladium oxide. The quantitative approach to the composition of the catalysts by XPS and EDX methods revealed that the surface of palladium doped cobalt catalyst is enriched with palladium oxide which provides a great number of active centres for methane combustion indicated by kinetic parameters.
Collapse
Affiliation(s)
- P J Jodłowski
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
| | - R J Jędrzejczyk
- Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland
| | - A Rogulska
- Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland
| | - A Wach
- Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland
| | - P Kuśtrowski
- Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland
| | - M Sitarz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
| | - T Łojewski
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
| | - A Kołodziej
- Institute of Chemical Engineering, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland; Faculty of Civil Engineering, Opole University of Technology, Katowicka 48, 45-061 Opole, Poland
| | - J Łojewska
- Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland
| |
Collapse
|
45
|
Verstraelen S, Remy S, Casals E, De Boever P, Witters H, Gatti A, Puntes V, Nelissen I. Gene expression profiles reveal distinct immunological responses of cobalt and cerium dioxide nanoparticles in two in vitro lung epithelial cell models. Toxicol Lett 2014; 228:157-69. [PMID: 24821434 DOI: 10.1016/j.toxlet.2014.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 12/27/2022]
Abstract
Fragmentary knowledge exists on cellular signaling responses underlying possible adverse health effects of CoO- and CeO2-nanoparticles (NP)s after inhalation. We aimed to perform a time kinetic study of gene expression profiles induced by these NPs in alveolar A549 and bronchial BEAS-2B epithelial cells, and investigated possible immune system modulation. The kinetics of the cell responses induced by the NPs were different between the lung epithelial models. Both CoO- and CeO2-NP exposure induced mainly downregulation of gene transcription. BEAS-2B cells were found to be more sensitive, as they showed a higher number of differentially expressed transcripts (DET) at a 10-fold lower NP-concentration than A549 cells. Hierarchical clustering of all DET indicated that the transcriptional responses were heterogeneous among the two cell types and two NPs. Between 1% and 14% DET encoding markers involved in immune processes were observed. The transcriptional impact of the metal oxide NPs appeared to be cell-dependent, both at the general and immune response level, whereas each lung epithelial cell model responded differently to the two NP types. Thus, the study provides gene expression markers and immune processes involved in CoO- and CeO2-NP-induced toxicity, and demonstrates the usefulness of comprehensive-omics studies to differentiate between NP responses.
Collapse
Affiliation(s)
- Sandra Verstraelen
- Flemish Institute for Technological Research (VITO NV), Environmental Risk and Health Unit, Mol, Belgium.
| | - Sylvie Remy
- Flemish Institute for Technological Research (VITO NV), Environmental Risk and Health Unit, Mol, Belgium.
| | - Eudald Casals
- Institut Català de Nanotecnologia (ICN), Barcelona, Spain.
| | - Patrick De Boever
- Flemish Institute for Technological Research (VITO NV), Environmental Risk and Health Unit, Mol, Belgium; Hasselt University, Centre for Environmental Sciences, Diepenbeek, Belgium.
| | - Hilda Witters
- Flemish Institute for Technological Research (VITO NV), Environmental Risk and Health Unit, Mol, Belgium.
| | - Antonietta Gatti
- Università di Modena e Reggio Emilia, Laboratorio Biomateriali, Modena, Italy.
| | - Victor Puntes
- Institut Català de Nanotecnologia (ICN), Barcelona, Spain.
| | - Inge Nelissen
- Flemish Institute for Technological Research (VITO NV), Environmental Risk and Health Unit, Mol, Belgium.
| |
Collapse
|